Chapter 4 Vocab

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Step 1
A, D, or NS
 Statement
 Step 2
A or D
A
 1. The slope of a line given by an equation in the form y=mx+b can be determined by looking at the equation.
D
 2. The y-intercept of y=12x-8 is 8.
D
 3. If two points on a line are known, then an equation can be written for that line.
A
 4. An equation in the form y = mx + b is in point-slope form.
A
 5. If a pair of lines are parallel, then they have the same slope.
A
 6. Lines that intersect at right angles are called perpendicular lines.
A
 7. A scatter plot is said to have a negative correlation when the points are random and show no relation between x and y.
NS
 8. The closer the correlation coefficient is to zero, the more closely a best-fit line models a set of data.
NS
 9. The equations of a regression line and a median-fit line are very similar.
NS
 10. Step functions and absolute value functions are types of piecewise-linear functions.




Term
 Lesson
 Definition
Best-Fit Line

Bi-variate Data

Correlation Coefficient

Line of Fit

Linear Extrapolation

Linear Interpolation

Linear Regression

Median-Fit Line

Parallel Lines
lines that will go on forever and never touch
Perpendicular Lines
lines that meet to form right angles
Scatter Plot

Slope-Intercept Form
an equation int he form of y=mx+b